61200622120 has 128 divisors (see below), whose sum is σ = 158035536000. Its totient is φ = 21122913280.

The previous prime is 61200622019. The next prime is 61200622123. The reversal of 61200622120 is 2122600216.

It is a super-2 number, since 2×61200622120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 61200622091 and 61200622100.

It is not an unprimeable number, because it can be changed into a prime (61200622123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 712194 + ... + 793486.

It is an arithmetic number, because the mean of its divisors is an integer number (1234652625).

Almost surely, 2^61200622120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61200622120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79017768000).

61200622120 is an abundant number, since it is smaller than the sum of its proper divisors (96834913880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61200622120 is a wasteful number, since it uses less digits than its factorization.

61200622120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81403 (or 81399 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 61200622120 in words is "sixty-one billion, two hundred million, six hundred twenty-two thousand, one hundred twenty".